I just did some data logging and the map is read in kpa? Accordind to my logs I was hitting 329kpa whis is something like 40 psi how do we get an accurate psi conversion from evoscan.

 

kpa = Kilopascals ABSOLUTE

subtract 14.7psi from your measurements.

 

that still puts me around 33psi when my boost gauge is reading 22psi

 

1) The conversion factor in the Data.xml file is wrong for the US model Evo.

2) The pressure sensor on the US model Evo is only used for vacuum. The output that Evoscan reads from the ECU peaks at 0.22 bar (about 3.3 psi).

If you want to see the value in psi relative to atmospheric pressure, replace "1.334x" with "0.072x-14.7".

 

The definition suits the JDM Evo IX with its 3+ bar MAP sensor. Having found the requestID whilst looking for load and stumbling across the MAP sensor, I calculated the 1.334x definition from the Evo IX service manual and supplied it to Hamish. Perhaps we might end up with a few different MAPs/MDPs in the definition and the one most appropriate will be selected, or the definitions will branch for different models.

 

Good info thx havent used it yet. I really want to see how lm1 works with evoscan with the rpm converter.

 

i input the new formula and I peaked at 3.03 is there another conversion to get the psi.

 

That's the highest that it will read. The US ECU will not report values higher than ~3 psi. Not sure if its the pressure sensor or the ECU programming or both.

 

So if my boost guage reads 25 psi and my MAP reads 328, is this sound right?

First off, how many kpa in one bar?

 

Its the max of the sensor.. I am going to swap my USDM sensor for a JDM 3 bar sensor and see if it fouls things up..

 

Where are you getting that sensor from?

 

A friend in Taiwan is going to hit the parts department this weekend for me.. If it works, I'll arrange to get a few of them.

 

What are you using to connect the LM-1 to Evoscan?

 

I meant to say without the rpm converter my bad. I will use the serial connection just waiting for my o2 sensor cable to come in since my other one was cut while moving some how.

 

Do you have to disconnect the rpm convertor from the LM-1 so it can log with Evoscan? Can't we just use the serial output cable from the side of the LM-1 box (the port we use to download to the pc) and connect that to Evoscan and log?